MHRD announced that the Neet 2021 syllabus will be reduced as this session i.e. 2020 - 21 has not yet started. And so it would be difficult to complete the syllabus. To complement this, CBSE has reduced the syllabus by 30% from class 9 to 12. For now you can check that syllabus as it seems that the syllabus released by CBSE will be retained for neet 2021 as well. The official syllabus for Neet 2021 will be released in the first week of December. Here is the link for the reduced syllabus by CBSE
http://medicine.careers360.com/articles/how-deleted-cbse-syllabus-will-impact-neet-2021/amp